Rubber covered mouthpiece is softer and provides and alternative taste to steel or copper. Quality English Bits from Korsteel are proven performers for all levels of training and competition. Korsteel bits are made from the highest quality materials and are available in D-Ring bits, Eggbutt bits, Gag bits, Kimberwicke bits, Loose Ring Snaffle bits, Pelham bits, JP bits, and other types of riding bits.